Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '433bdbc304419786fa644d5fe59fa5181c1a4586e9694a3a0661ac7f76076123' 
  AND token = 'JreZcND0UlH3zw5aq+tFVSc6b95HLZmiSdlbbijT8rM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}